Machine for dyeing yarn



Jan. 9, 1934.

H. GOUGH MACHINE FOR DYEING YARN Filed Oct. 17, 1932 2 Sheets-Sheet 1.

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H- Gwu h INYeNTaK Jan. 9, GOUGH 1,943,175

MACHINE FOR DYEING YARN Filed Oct. 17, 1932 2 Sheets-Sheet 2 Q F -l Fig.3

puma/0171 2 Patented Jan. 9, 1934 PATENT OFFICE REACHINE F'OR DYEING YARN Harold Gough, Manchester, England, assignor to The British Cotton 85 Wool Dyers Association Limited, Manchester, England, a British com- Application October 1'7, 1332, Serial No. 638,236, and in Great Britain December 12, 1931 3 Claims.

This invention relates to machines for the dyeing and like treatment of yarn and loose material or articles by the circulation of liquor therethrough, and has for its object to provide an improved construction and arrangement of machine in which uniform results are obtained with a minimum expenditure of power.

The invention comprises a dyeing or like machine comprising a vat divided into dyeing and propeller compartments with communication between the tops and the bottoms of the two compartments, a propeller with blades of gradually reversible pitch being arranged at the throat of a Venturi construction in the propeller compartment whereby a gradual slowing down, reversal of direction and speeding up of flow of the dye liquor to and from the dyeing compartment is obtainable with the avoidance of entanglement of the goods due to surging of the liquor upon 2 reversal.

The invention further comprises the formation of the passage beneath the dyeing compartment leading to the propeller compartment of tapered form.

The invention further comprises the rounding of the bends at the top and bottom of the propeller compartment to facilitate the flow of the dye liquor and prevent eddy currents therein.

Referring to the accompanying sheets of ex- Q planatory drawings Figure l is a sectional elevation of a-yarn dyeing machine constructed in one convenient form in accordance with my invention.

Figures 2 and 3 show two arrangements of the propeller compartment of such machine with the propeller at the throat of a Venturi construction. The figures are sectional end views.

The same reference letters in the three views indicate the same or similar parts.

The dyeing machine comprises a rectangular vat a divided into two compartments b, c. 11 contains the yarn or material being treated which is supported upon a false bottom it or may be suspended upon sticks or rods contained in a re- 45- movable frame which may be hoisted into and removed from the compartment b. A perforated cover (1 may be placed over the materials being treated when these are loose in the compartment 27. The compartment 0 contains a reversible pitch propeller e driven from an electric motor as mentioned hereinafter. The compartment c communicates with the yarn compartment by a passage 1 of tapered or converging form beneath the false bottom d before referred to, and over the division wall g between the two compartments.

There is a grid h above the division Wall to prevent any goods getting into the propeller space. The propeller is arranged in a th'roated part i of its compartment, and such part may have tapering walls 7 leading to the throat from its to: opposite sides as shown in Figures 2 and 3 so that eddy motion in the dye liquor is reduced to a minimum. In like manner the bend at k between the propeller compartment 0 and the converging space J beneath the false bottom (I. of the dyeing compartment is rounded to give an easy path for the flow of the liquor to and from the propeller. The bend m at the top of the propeller compartment is likewise rounded for the same purpose.

The propeller is directly driven by a motor n and means such as the hand wheel 0 are provided for gradually changing the pitch of the propeller blades, putting them into a neutral position and then reversing them periodically 1 without stopping the rotation of the propeller, so as to reverse the direction of fiow of the dye liquor to and from the dyeing compartment.

By employing a reversible propeller and arranging it at the throat of a Venturi tube produced by the throat and tapered walls 7' and by stream-lining the passages for the flow of the dye liquor, I ensure efficiency of operation and uniform dyeing of the yarn or the like. The propeller pitch is altered gradually so that the reversal of the liquor flow is effected gradually which is very advantageous in comparison with a system in which the motor driving the propeller is reversed which results in entanglement of the goods due to surging of the liquor.

The machine may be made in wood if desired and be lined with or be made in stainless or rustless metal.

Whilst the machine has been referred to as a dyeing machine, it will be understood that this is intended to include a machine in which the similar processes of washing, scouring, bleaching &c are performed. The materials to be treated may be such articles as hosiery and stockings in addition to yarn.

What I claim is:

1. In a machine for dyeing and like treatment of yarn and loose articles, the combination of a vat divided into dyeing and propeller compartments with communication between the tops and ice:

bottoms of the two compartments for the flow of the dye liquor, a Venturi construction in said propeller compartment, a propeller with blades of gradually reversible pitch in the throat of said Venturi construction, and means for gradually reversing said blades successively to slow down, reverse and speed up the flow of the dye liquor whereby entanglement of the articles is obviated.

2. In a machine for dyeing and like treatment of yarn and loose articles, the combination of a vat divided into dyeing and propeller compartments and a passage tapering from said propeller compartment and extending beneath said dyeing compartment with communication between the tops of the two compartments for the flow of the dye liquor, a Venturi construction in said propeller compartment, a propeller with blades of gradually reversible pitch in the throat of said Venturi construction, and means for gradually reversing said blades successively to slow down, reverse and speed up the flow of the dye liquor whereby entanglement of the articles is obviated.

3. In a machine for dyeing and like treatment of yarn and loose articles, the combination of a vat divided into a dyeing compartment and a propeller compartment with rounded corners of streamline form with communication between the tops and bottoms of the two compartments for the flow of the dye liquor, a Venturi'construction in said propeller compartment, a propeller with blades of gradually reversible pitch in the throat of said Venturi construction, and means for gradually reversing said blades successively to slow down, reverse and speed up the fiow of the dye liquor whereby entanglement of the articles is obviated.

HAROLD GOUGH. 

